Solve: (2cos x – 1 = 0).
Solve: (2cos x – 1 = 0). A. ((frac{2pi}{3}, frac{4pi}{3})) B. ((frac{pi}{6}, frac{5pi}{6})) C. ((frac{pi}{5}, frac{2pi}{5})) D. ((frac{pi}{3},…
Simplify (frac{1 – 2sqrt{5}}{2 + 3sqrt{2}}).
Simplify (frac{1 – 2sqrt{5}}{2 + 3sqrt{2}}). A. (14(2sqrt{2} + 6sqrt{5} – 4sqrt{10})) B. (frac{1}{14}(2 – 3sqrt{2} – 4sqrt{5}…
A ball falls from a height of 18m above the ground. Find the speed with…
A ball falls from a height of 18m above the ground. Find the speed with which the ball…
A man of mass 80kg stands in a lift. If the lift moves upwards with…
A man of mass 80kg stands in a lift. If the lift moves upwards with acceleration 0.5(ms^{-2}), calculate…
A force 10N acts in the direction 060° and another force 6N acts in the…
A force 10N acts in the direction 060° and another force 6N acts in the direction 330°. Find…
A body of mass 10kg moving with a velocity of 5(ms^{-1}) collides with another body…
A body of mass 10kg moving with a velocity of 5(ms^{-1}) collides with another body of mass 15kg…
Find the unit vector in the direction of (-2i + 5j).
Find the unit vector in the direction of (-2i + 5j). A. (frac{1}{sqrt{29}}(2i + 5j)) B. (frac{1}{sqrt{29}}(-2i +…
Given that (r = 3i + 4j) and (t = -5i + 12j), find the…
Given that (r = 3i + 4j) and (t = -5i + 12j), find the acute angle between…
A box contains 14 white balls and 6 black balls. Find the probability of first…
A box contains 14 white balls and 6 black balls. Find the probability of first drawing a black…
A fair coin is tossed 3 times. Find the probability of obtaining exactly 2 heads.
A fair coin is tossed 3 times. Find the probability of obtaining exactly 2 heads. A. (frac{1}{8}) B.…